Material-handling machine



A. W. RYBECK MATERIAL HANDLING MACHINE Filed July 13, 1922 2 Sheets-Sheet 1 Tm MA March 25 1924.

A. W. RYBECK MATERIAL HANDLING MACHINE Filed July 13, 1922 2 Sheets-Sheet 2 I. m m I Mm m gig r w .3 t

ADOLPH W. RYBECK, OF MILWAUKEE, WISCONSIN, ASSIGNOR T0 '1. L. SMITH COM- PANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF.WISCONSIN.

MATERIAL-HANDLING MACHINE.

Application filed July 13, 1922. Serial No. 574,784.

vented new and useful Improvements in Material-Handling Machines, of which the following is a description, reference being had to the accompanying drawing, which is a part of this specification.

This invention relates to certain new and useful improvements in material handling machines .more particularly of that type having a member adapted to be operated first in one direction and then in another by means of cables, or the like.

Inthat type of cement mixing machines having a distributing bucket mounted on a horizontal boom for movement to and from the mixing drum, a very complicated struc-.

ture including a number of gears has heretofore been utilized'to maintain the cable playing out or unwinding taut. Such a construction is objectionable in that considerable shop trouble is experiencedin its production, and its operation is unreliable.

Having the above in mind, it is one of the objects of this invention to provide a simple and comparatively inexpensive device of the character described in which the drum playing out cable tends to maintain the cable taut.

Another object of this invention resides in described in which the cable drums are rotatably mounted on a drive shaft having means normally tendin to rotate the drums therewith, the drums eing permitted rotation in an opposite direction to the drive shaft.

A further object of this invention resides in the provision of a device of the character described 'having a cable drum rotatablv mounted on a drive shaft, the drive shaft carrying brake and clutch members, one of which is at all times engageable with the drum member to yieldabl tend to rotate the drum member with the riveshaftand the other of which is normally free of the drum member but is engageable therewith to lock the drum member to the drive shaft.

A still further objectof this invention resides in the provision of an improved device of the type described in which a sin le lever is employed to connect either of t e cable drums with the drive shaft and which is readily releasably secured in either neutral position or in a' position connecting either of the drums with the drive shaft.

With the above and other objects in view which will appear as the description proceeds, my invention resides in the novel construction, combination and arrangement of partssubstantially as hereinafter described and more particularly defined by the a pended claims, it being understood that suc changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claims.

In the accompanying drawings, I have illustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical ap lication of the principles thereof, and in which:

Figure 1 is a side view of two drum mem-: bers employing my invention, but a part of the supporting frame structure being illustrated and part of the drive pinion being broken away and in section;

Figure 2 1s a view part in section and part in elevation taken through Figure 3 on the plane of line 22; and

Figure 3 is an enlarged view, partly in numeral 5 designates one of the upwardly I and inwardly inclined side brace beams positioned adjacent the mixing drum 6 partly illustrated in Figure. 1, the beam 5 being carried by a. platform or supporting frame 7. Secured to beam 5 is a bracket'member '8 carrying a bearing 9 in which is journaled one end of a drive shaft 10, the other end of which carries a plate 11 provided with a plurality of openings 12 for the reception of drive pins 13 carried by a drive pinion 14. Plate 11 is enclosed within a recess 15 in the drive pinion and has its periphery slightly rounded topermit movement in the event shaft 10 should be out of alignment with shaft 16 upon which. pinion 14 is fixed. Shaft 16 is journaled- 1n the bearing 17 of a standard 18 mounted on the supporting frame. 7

As is usual in cement mixers, drum 6 has a ring gear 19 secured about its periphery with which a drive pinion is meshed and in this invention pinion 14 not only functions as a drive for the mixing drum but a drive for the shaftupon which are mounted two cable drum members 20 and 21.

Drums 20 and 21 are rotatably mounted on the journals or bearing surfaces 22 of sleeve members or bushings 23 fixed to shaft 10. The bushings 23 have arms 24 on the outer ends thereof adjacent brake flanges carried by the drums, the outer end of each arm being substantially U- shapedto provide a part 26 overlying the outer braking surface 27 of the adjacent brake flange to provide means for attaching one end of a brake band or clutch member 28.

Brake bands or clutch members 28 are disposed about the brake flanges and normally held from engagement therewith, one end of each band being secured to the adjacent part 26 by an adjustable member 29' and the other end thereof being secured to the outer arm 30 of a lever 31 by an adjustable eye bolt 32, lever 31. being medially pivoted to arm 24, as at 33, and having its inner end normally urged, by a spring 34, to disengage the band from the brake drum.

The levers 31 are actuated against the force of springs 34 to tighten the bands about their respectiv brake flanges to thus drivingly connect the cable drums with the shaft 10 by cone shaped collar members 35 slidably, but nonrotatably, mounted on shaft 10 and connected with an operating rod 36 by bolts or other members 37 which pass through elongated slots 38 in shaft 10. lVith this construction it will be readily apparent that members 35 are operated in unison and their movement in either direction is limited by the slots 38.

With the members 35 in the positions illustrated in the drawings, neither of the drums 20 and 21 are drivingly connected with shaft 10, but a shifting of rod 36, by the means to be later described, causes the tapered face 39 of the member 35 being moved toward the cable drums to engage a roller 40 mounted on the inner end of the inner arm 41 of the adjacent lever 31 to move the same to the right, with reference to Figure 2, and thus firmly bind the band 28 carried therebyabout the braking surface of the adjacent brake flange and lock the drum to shaft 10, the other drum remaining free to rotate independent of shaft 10 but being normally yieldably rotated with the shaft in order to retain the cable wound thereon taut, at the same time permitting its playing out when necessary.

The means for retaining the cable on the drum, not connected with shaft 10, taut consists of a brake or drag shoe 42 pivotally carried by a pin 43 mounted on the adjacent arm 24 upon which is also pivoted a lever 44 having an arm 45 carrying an adjustable set screw 46 which engages the brake shoe and holds the same against the inner braking surface of the adjacent flange 25. Set screw 46 is yieldably urged to engage the brake shoe by a spring 47 confined Rod 36 is shifted by a lever 50 which is fixed to a shaft 51 journaled in an arm 52 projected from bearing 9, shaft 51 having one end of a yoke member 53 fixed thereto. The ends 54 of the yoke member carry pins 55 which engage in the channel or groove 56 of a collar member 57 fixed to the outer end of rod 36 and protectedby an extension or covering 58.

A projection or arm 59 is extended from the lower end of lever 50 for engagement with a spring member 60 whereby rod 16 is l'eleasably secured in either of its three positions, end 59 engaging in a depression or recess 61 in the sprin when the rod 36 is in neutral position and being held in either of its two drive positions by the spring of the member 60 as will be readily obvious.

What I claim as my invention is:

1. A device of the class described comprising a drive shaft, drum members rotatably mounted thereon, brake elements carried by the drive shaft and yieldably restraining the drum members from rotation thereon, means for drivingly connecting the drum members to said drive shaft, and said means being operable by elements movable upon said drive shaft.

2. A device of the cla described comprising a drive shaft, sleeves fixed thereto and having drum members mounted thereon for rotation. brake elements carried by said sleeves and yieldably restraining said drum members from rotation thereon, and means also carried by said sleeves for drivingly connecting the drum members thereto.

A device of the class described comprlsing a drive shaft, sleeves fixed to said shaft, drum members mounted for rotation upon said sleeves, arms carried by said sleeves and having fixed thereto elements for yieldably restraining the drum members from rotation, a second. means carried by said arms for drivingly connecting the drum members to said sleeves, and said second means being operable by elements movable upon said drive shaft.

4. A device of the class descri enmprising a driving member, a drum mounted thereon, means carried by. the driving memher and engageable with the exterior of said drum for connecting the same thereto, a second means carried by the driving memher for yielda'bly restraining the rotation of said drum when disconnected from said driving member, and the first said means being operable by an element movable upon said driving member.

5. A device of the class described comprising a drive shaft, drum members rtably mounted thereon, brake elements carried by said drive shaft and tending at all. times to yieldably restrain the drum memhere from rotation thereon, means for driving'ly connecting the drum members to said drive shaft, and said means being operated by elements movable longitudinally of said drive shaft.

6. A device of the class described com prising a drive shaft, drum members r0tatably mounted thereon, brake elements carried by the drive shaft and tending to yieldably restrain the drum members from rotation thereon, and means for drivin connecting the drum members with drive shaft.

In testimony whereof I afiix my signature.

ADOLPH W. RYBECK.

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